Products Description
ASTM Grade 1 Corten Steel Pipes are made from ASTM A423 Grade 1 steel, known for durability, resistance to corrosion, and a unique rust-like appearance over time.

Used in outdoor sculptures, architecture, marine transport, and industrial settings for lasting performance in harsh conditions.
ASTM A423 Grade 1 Corten Steel Pipes Specifications
|
Size Range |
½ OD to 16 OD |
|
Standards |
ASTM A 423 / ASME SA 423 |
|
Grade |
ASTM A423 GR 1 / ASME SA423 GR 1 |
|
Type |
Round, Square, Rectangle, Hydraulic, Honed Tubes |
|
Length |
Single Random, Double Random & Customize Size |
|
Type |
Weathering Steel |
|
End |
Plain End, Beveled End, Threaded End |
ASTM A423 Grade 1 Corten Steel Pipes & Tubes Chemical Composition
|
Grade |
C |
Si |
Mn |
P |
S |
Al |
V |
Cu |
Cr |
Ni |
| ASTM A 423 |
0.12 |
0.25/0.75 |
0.20/0.50 |
0.07/0.15 |
0.030 |
0.015/0.06 |
– |
0.25/0.55 |
0.50/1.25 |
0.65 |
ASTM A423 Grade 1 Corten Steel Pipes & Tubes Mechanical Properties
|
Grade |
Yield Strength MPa(min) |
Tensile Strength MPa |
Elongation % (min) |
| ASTM A 423 |
355 |
470-630 |
20 |
Equivalent Standard For ASTM A423 Grade 1 Corten Steel Pipes & Tubes
|
Application |
British Standard |
Japanese Jis |
German Din |
American Astm |
| Air Pre Heaters |
Bs-6323-5 |
JIS G 3445 |
DIN 17177 |
ASTM A423 GR.1 |
Products Application
ASTM A423 Grade 1 Corten steel pipes and tubes are widely used in high-temperature, high-pressure, and outdoor environments due to their exceptional weathering resistance, high strength, and low maintenance requirements. Typical applications include:
Air Preheater Units
Designed for high-temperature flue gas up to 200°C.
Pipe dimensions commonly used: OD 50–400 mm, wall thickness 3–12 mm.
Corrosion rate in atmospheric conditions: 0.03–0.05 mm/year.
Steam Generating Boilers
Suitable for pressures up to 1.6 MPa and temperatures up to 250°C.
Tubes often used: seamless or welded, lengths up to 12 m, with yield strength ~355 MPa.
Power Generation and Fossil Fuel Plants
Used in economizers, heat exchangers, and flue gas ducts.
Able to withstand acidic flue gas condensation and SO₂-containing environments.
Reduces maintenance frequency by 40–50% compared with standard carbon steel.
Water Supply Systems & Waste Heat Plants
Excellent durability for outdoor piping and wastewater transport.
Operates reliably in temperatures from -20°C to 100°C.
Cogeneration Facilities & Electric Power Plants
Pipes are used for steam distribution, condensate return, and process fluid transport.
Typical tensile strength: 470–630 MPa, elongation ≥ 20%, ensuring safety under cyclic loading.
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